Project: Suzuki GP125

[Student]

Yeah posted a few topics around the forum with my bike in,
But it's a 1984 Suzuki GP125 2 Stork Engine
Currently trying to get it running (If anyone has idea's they're all welcome, the title of that topic is Suzuki gp125 running problems)
But I intend to get it up and running, hopefully for less than £750 (so far spend in the area of £500 trying to fix it, but if it gets to £750 and isn't working then I'm selling it on or scrapping it. If it's running then I'll do a full restore on it over the months to follow
But yeah, here it is in it's current state
https://a712.ac-images.myspacecdn.com/images01/95/l_a809f39db2784ec7dfc72cba6f4ee13f.jpg
https://a762.ac-images.myspacecdn.com/images01/92/l_d2a93de1adbf4ccbac81155a166c44a9.jpg
Took ages to get the rust off one side of the fork, cleaned both up now, just haven't had nice weather to picture it
https://a9.ac-images.myspacecdn.com/images01/11/l_b0cc8f0b7ceca4e19ae11459909fca48.jpg

If anyone has any idea's of how to get rid of surface rust, and how to buff up the engine casing would you let me know?
But yeah I hope to get that to it's former glory, don't mind the cost so much after I've got it working
but yet us know what you think of it, and I'll post pictures up of how it's been improved as I get it done

[MaybeGuy]

use different grades of wet and dry, followed by autosol metal polish or something.

start at about 500 grit paper and work your way up to 800 grit or something. should get a really nice shiny finish once polished up.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Student]

After looking at the Engine Cases properly I think there actually made out of plastic and have been painted grey...
But did some work on the rust on the frame:

Before:
https://a659.ac-images.myspacecdn.com/images01/65/l_02da8d1895cae52d75d8873946ecf97a.jpg

After:
https://a738.ac-images.myspacecdn.com/images01/111/l_4ded7b9a9e753bdf73e4112f6bf80599.jpg

Before:
https://a518.ac-images.myspacecdn.com/images01/114/l_2e52238cb441caa143080421205cd3bd.jpg

After:
https://a888.ac-images.myspacecdn.com/images01/28/l_3ac3565a9a721a33c986686600dde43f.jpg

Did a few other touch ups but they where the main areas

[MaybeGuy]

watch out for rust on those sorts of swingarms.
it may not look bad, but it may well have penitrated and already be eating its way out.

i recently had to weld up a swingarm on my RXS100 for the MOT, as when the tester poked it with a screwdriver, it went straight through.
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Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Student]

There's one bit that's going to need fully replacing, my brother will probably be able to make it for me though, but the swing arms atm are still pretty solid, was just surface rust (I think) But that's why I put some rust paint stuff on them, encase it got worse, plus it makes it look a little bit tidier.

[neilo]

Hi did you say it's not running .Do you have any symptoms?.Neil

[Student]

Ahh bloody hell its been ages since I said anything in this topic :p

The bike's near enough running now, I've just got to sort out the fuel mixtures on it and it's done

It needed a new gasket in the carb that was all >.<
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[satelliteone]

oooooooerrrrrrrr... like it!..

Nice!.. woop" another GP..

Lots of elbow grease , but it looks it great cond already..
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Honda XLR125R - Project
TZR125RR Belgarda 4DL - Sold
Chinki Project done n Dusted/sold** DTR125 2003 - Finished/sold

[Student]

Added a few more things, mostly internal things (Helicoiled exaugst fittings as they had gone, new Points and Condenser? fitted, but not gonna take pictures of them )

So here's a few new things that you can actually see
https://c3.ac-images.myspacecdn.com/images02/52/l_519a9949ec29438c83be3dd7746154e6.jpg
Wheel looks nasty and the pictures a bit blurry but there's a new Sprocet(sp?) abnd chain on it, looking at price for a new chain gaurd since I can't polish it up

https://c1.ac-images.myspacecdn.com/images02/48/l_37698e48b76744a98cc8c0b406640498.jpg
That's the carb side of the engine all nicely polished up.

Haven't riden it since these changes, my dad picked it up from the garage and the rear lamp lense fell out so it's not road legal atm :p But it's meant to smell/sound/run really well now

(We tested how loud the engine is, can be heard for about 2 miles )
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[hmmmnz]

nice, i love rotary valve smokeys
(ive got 2)
they dont like to be flooded, so always turn off your fuel tap.
(as the fuel goes directly into the bottom end)
and if you ever park it up for a long period, make sure that its sitting at top dead center,

i expect to see a running video shortly
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Student]

... ¬.¬ I always leave the fuel tap on... I know I shouldn't but it never floods...

It only has a start up problem when I leave the choke on too long.

And yeah I'm gonna see if I can get a video done when the weather sorts out, hopefully I wont stall it >.< :p

Its coming a long nicely though, rest of the damage is mainly cosmetic and rust repaire but still looking at a few hundred to finish it off
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[hmmmnz]

cool cool,
if it decides not to start one day for no reason, that'll be it
it looks to be in quite good condition considering how much you guys salt the roads,
good to see the old skool smokeys are still being kept alive,
heres a couple of mine
that one is a bridgestone 60cc rotary valve monkey bike that i just rebuilt the engine on, needless to say finding parts was neigh on impossible )
https://i58.photobucket.com/albums/g257/hmmmnz/DSCF1932Small.jpg

this is my little commuter a suzuki b120 (only 6000km on the clock )
https://i58.photobucket.com/albums/g257/hmmmnz/DSCF1825Small.jpg

i pick up this one in the weekend a kawasaki kh125 rotary valve
https://i58.photobucket.com/albums/g257/hmmmnz/86429204_full.jpg

it should be a good little project,
i also have a rg150 engine that im trying to find a suitable frame to go into

and a little vt250 (4 stoke) that im rebuilding at the moment

keep the pics coming
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Student]

I quiet like that B120... What year is it?
And the Kawasaki looks quiet a lot like the GP 125 in some ways

Aye, they will be coming, I've got a new rear lamp coming tomorrow so I'll fit that on and hopefully get it on the road for a few pictures and a video of it actually running over the weekend

I'll keep you posted ^_^
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[hmmmnz]

the b120 was first registered in 1982 in nz but they stopped making them in 1978 in japan, so i dare say it was sitting in a warehouse in japan for a few years untill they could find some one to take them off there hands, quite a few made it in to new zealand, but they were mostly a japanese domestic market bike. pretty damn slow to be honest, but perfect for wellington (nz capital city)

yeah thye gp is quite similar to the kh,
both kawasaki and suzuki both started to make rotary valve bikes after bridgestone won a few race events, and then they basically forced bridgestone out of the maket refusing to buy there tyres if they kept producing bikes, and then stole the design, and started making them themselves cheeky buggers aye.
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Student]

lol

aye I've noticed that about Japanise bikes, they seem to get a bike, improve it then sell it :p

Bike's back on the road, today so gonna try get some pictures and maybe a video of the thing... Although not sure my camera can handle the volume... :p
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[Student]

Reet, got some more pictures done of recent work, and a video but youtube hasn't uploaded it yet


So here are some pictures and a video of it starting


New rear lamp lense.. Screws haven't arived yet so string and electrical tape does the trick
https://c2.ac-images.myspacecdn.com/images02/49/l_05086645b0d74cbab330924c2156b259.jpg

This I can't remember the name off the top of my head, but it's needed for my break..
https://c4.ac-images.myspacecdn.com/images01/23/l_f8bbce478ca484178f12c32951079f3b.jpg

I've replaced that with this (Didn't remember to clean it after picture sorry>.<)
https://c3.ac-images.myspacecdn.com/images02/46/l_88f5b76f9f8a40d788ffc83b4baa942e.jpg
The rust is starting to get bad now... I am trying to keep it clean.. Just can't get rid of it

The old one after we'd taken it off, cleaned the rust off and painted it (we needed to use it a little longer while the new one came in)
https://c2.ac-images.myspacecdn.com/images02/25/l_82e95501080d45168f12e5a37d2d3f0d.jpg
(It's now in the bin)

How it was
https://a9.ac-images.myspacecdn.com/images01/11/l_b0cc8f0b7ceca4e19ae11459909fca48.jpg


how it is now
https://c4.ac-images.myspacecdn.com/images02/2/l_eefc224d2f854d699cbf95b359e27753.jpg

As I say I have a video to add with it running, but it's still in processing for youtube. It'll be up soon
[/img]


PS. What happens at the pub when we nick my mates lid + bag
https://c3.ac-images.myspacecdn.com/images02/35/l_6593cde7c5d24af79dd2bdc4c28529e2.jpg
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[ish765]

Great sound
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RXS100 On the Road.

[KarlosHendry]

Hey, i'v had a quick browse of this topic and thought that this might be of interest to some of you.

I have recently got a Suzuki GP 125 '1983' and its in perfect working order. When i got it it had just over 9000 miles on the clock and only a few dents and tiny patches of rust.

Here are a few pictures and a video
enjoy.


https://i657.photobucket.com/albums/uu299/milkster125/P180809_1809.jpg

It came with the original tool kit too.
https://i657.photobucket.com/albums/uu299/milkster125/P180809_1811.jpg

https://i657.photobucket.com/albums/uu299/milkster125/P180809_1812.jpg

https://i657.photobucket.com/albums/uu299/milkster125/P180809_181201.jpg

https://i657.photobucket.com/albums/uu299/milkster125/P180809_181101.jpg

Heres a video of it starting and idling.
https://www.youtube.com/watch?v=sy3bQ1DszeM&feature=channel_page

Hope this was of interest :]
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Current bike: Suzuki GP 125, 1983 Model, all in brilliant condition for it's age

[Student]

Yeah, your's looks like its in a little bit better nick then mine, I'm hoping to get mine to a similar standard, but its back off the road now, Student life has crippled my finances until I get a job sorted.
But yeah thats the model I really wanted, I think it looks prettier And it sounds alot nicer with the baffler
Only think I don't like are the mirrors
Where abouts did you get it? I'm looking for another one to use as parts and I'm not finding them too easily
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[Ragnaco]

I own a GP 125, and so does my father, Had mine for over 2 years now great little runner, my friend just directed me towards this thread, I'll try and get some pictures and videos of my bike's tomorrow.
Sadly they are no where near as well kept as the two great lookers in this post, mines a rust bucket and my fathers is even... well you will see great to see two good bikes looking so nice though, makes me want to clean mine up.
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Current bike : Suzuki GP 125 1982

[Student]

Do it!
You'll be amazed at how many parts you can get for them, only thing I'm actually struggling to replace is a side panel, the rest of the parts I've found at a suzuki dealer or on the Internet. And I've replaced gaskets, clutch, break bar, lap shade, all sorts, all thats left is the pipe and rear wheel holding bit then it's paint job time.. Oh and the wheels but they still work :p
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius

[satelliteone]

I did a GP100 project last year, nice to others are doing it..wahh hey...

https://www.bikechatforums.com/viewtopic.php?t=158050&highlight=project+gp100

[practicalfool]

I bought a GP125 a few days ago. From a mechanic who is retiring, selling his house and moving to the countryside. Looks pretty decent so far, especially for the 500 dollars I paid for it

Its starting in ~ 3 kicks from cold and maybe needs a bulb changed in an indicator. The horn is rather feeble (I can hardly hear it, the engine roars far far more loudly) I'll have to open it and find out, not a problem since the guy basically handed over all the spare parts he had left after selling all his bikes!
Only concern is that it belches smoke for ~ half a minute to a minute after starting. He said its always done so but I mean to get it a roadworthy certificate and get it registered for on-road use... I'm not sure if it would pass that test for pollution control The engine sounds rather nice though. only has ~ 26,000 Kms on it.

I'm a little wary of taking it in for the roadworthy test if they are going to pick on things. I want to fix it up first.
Any advice on what Exactly to check before trying to get it registered would be welcome. I'll post up some pics and m'be a video of the sound and smoke when I go back to mum's house (where its parked ATM).

[hmmmnz]

thats the nature of 2 stroke bikes they all do it,
take the bike to them warm, if you are worried about it, but they won't fail you on a bike that only has to meet 80's emmission standards, not todays standards
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Student]

right so, after a winter of trying to keep this thing running I failed.

And finally the part I need is D/C

Anyone have any idea's as to how I can get around a Master Cylinder that basically got held together by the fluid in it? (Once I changed the pads and the break fluid the seals dissolved and I can't access them to replace them, so now need a new part.

Is there an alternative I could use? I know the GSX400 T 96, GS250 T/X 96 and GS450 82+99 bikes all used them, but this isn't really helping my luck in finding a replacement at present

Will be grateful for any advice you brilliant people can give ^_^
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Current bike/project - Suzuki GP 125
Wish bike - Suzuki Gladius